Spiral tool-driver.



I C. WILDER,

SPIRAL TOOL DRIVER.

urmmmonrnnn JULY 24, 1912. RENEWED SEPT. 15, 1914.

Patented Nov. 24, 191%.

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G. WILDER.

SPIRAL TOOL DRIVER. APPLIGATION FILED JULY 24, 1912. RENEWEDYSEPT. 15, 1914.

1 9 1 1 925GB Patented Nov. 24, 1914:.

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@ore? F KZ'ZJP 7 L UNITED STATES PATENT OFFICE.

CHARLES WILDE-R, OF SAN DIEGO, CALIFORNIA SPIRAL TO OIL-DRIVER.

Application filed July 24, 1912, Serial No. 711,263.

To all 107mm it man COW/69W Be it known that I, CHARLES WILDER, a citizen of Canada, and a resident of San Diego, in the county of San Diego and State of California, have invented certain new and useful Improvements in Spiral Tool- Drivers, of which the following is a specification.

My invention relates to tool-drivers, hand drills and the like which operate automatically by reason of longitudinal pressure on the one end thereof which produces a rotary motion in the spindle, and the objects of my invention are, first, to provide a device of this class which may be regulated and controlled by the one hand of the operator, thus facilitating its use in corners and narrow places, and the like; second, to provide such a device in which the spindle may be revolved in opposite directions as desired by a longitudinal pressure on the handle of it, or it will revolve withthe handle; third, to provide such a device with a means for producing and regulating a ratchet movement of said spindle relatively to the ha'ndle in either direction; fourth, to provide such a device adapted to thrust the spindle outwardly at all times and provided with a means for locking it in when desired, and fifth, to provide such a device which is sim- .ple of construction, easily operated and very compact in form. Y

lVith these and other objects in view as will appear, my invention consists of certain novel features of construction, combination and arrangement of parts as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawings and to the characters of reference thereon, which form a part of this specification, in which Figure 1 is an elevational view with a portion broken away and in section of my device, Fig. 2 is a sectional view through A-B in Fig. 1, Fig. 3 is a perspective view of oneof the shifting bars, Fig. 4: is a detail elevational view of the ratchet mechanism, Fig. 5 is a detail elevational view of the ratchet mechanism showing the controlling means, Fig. 6 is a sectional view through CD in Fig. 1, Fig. 7 is a perspective v ew of the other shifting bar, Fig. 8 is a sectional v1ew showing particularly the looking piece out (if-engagement with thespindle, and .F 1g. ,9

Specification of Letters Patent.

Patented Nov. 24, 1914, Renewed September 15, 1914. serial No. 861,923.

is a detail perspective view of said locking piece.

Similar characters of reference refer to similar parts throughout the several views. The handle 1, outer casing 2, inner casing 3, ratchet wheels 4 and 5, shifting bars 6 and 7, locking .piece 8, spindle 9, spring 10 and sprlng releasing trigger 11 constitute the principal parts of my screw-driver.

The handle 1 is shaped asshown best in Figs. 1 and 2, and is provided with a reduced extended portion 1, which extends into the outer casing 2 and fits over the inner casing 3 and is held in its position by" means of the extended portion of the ring 3 in an annular groove in the inner casing adapted to prevent the spindle from being thrust out of the end of the tube 3 by the thrust of the spring 10. On the other end of said spindle 9 is mounted a chuck 9 provided with .a knurled hand piece revolubly in the spindle 9 is provided an annular groove 9 adapted to receive a portion of the locking block 8, which locking block is shaped as shown best inFig. 9. Mounted .85 mounted thereon. Adjacent to the chuck 9 on the spindle and provided with inner lugs 4 and 5 respectively adapted to fit one intov each of the spiral grooves insaid spindle are the ratchet wheels 4 and 5. These ratchet wheels 4 and 5 are also revolubly mounted in a sleeve 2 which is rigidlya'ttached to the inner casing 3 and to the annular stopbearing 3* by means of a screw 3. Into the end of this sleeve 2 is screwed the annularly flanged nipple 2.

Between the two ratchet wheels 4 and 5 is placed a divider 2 The ratchet pawls 41 and 5 are shaped as shown best in Fig. 1, and they are adapted to be tilted out of engagement with their respective ratchet wheels by means of the spring 6 on the one end of the shifting bar :6 which forces them down respectively on the surfaces 2 and2 as shown best in 'Figs'.

'1 and 5. Near the other end of the shifting bar .6 and mounted thereon is the thumb piece 6 which is provided on each side with a lug 6 adapted to engage with and conform to the notches placed in the outer casing. Thisshifting bar 6 is shifted longitudinally by forcing the thumb piece inwardly, thus compressing the spring portion and then moving it in the direction desired. The sleeve 2 is slotted sufficiently to receive the switch member 6 and that portion of the shifting bar 6 to which it is attached. Rigidly secured to the one end of the shifting bar 7 is a lug 7 adapted to bear on the outer surface of the locking piece 8 which is loosely mounted in a beveled recess in the nipple 2 as shown best in Figs. 2 and 8. On the other end of said shifting bar 7 is a thumb piece 7* provided with two small lugs 7 on opposite sides thereof, adapted to engage with notchesof a similar shape cut in the outer casing 2, and the bar 7 is of the same shape and is operated in the same manner as the bar 6 previously described.

Mounted loosely in the inner casing 3 is a compression spring 10 on the thrust plug 10 which rests against the end of the spindle 9and in the end of the inner casing 2. Flush with the outer surface of the handle '1 is screwed a plug 10 adapted as a support for the other end of the spring 10. Pivotally mounted on lugs 11*- which extend from the plate 11 which is set in flush with the face of the handle by means of screws in the one side of the handle is a trigger 11, shaped as shown best in Fig. 2. The spring 11 causes said trigger 11 to normally engage with the plug'lO to prevent its longitudinal. movement in the inner tube 3, but when the outer end of the trigger is thrust downward, the inner end thereof moves up out of engagement with the thrust plug 10 and allows the free movement of the spring, plug and spindle in the inner tube.

It is obvious that with this construction and arrangement there is provided an automatic screw driver, hand drill or the like, that is simple and economical of construction; that when the bar 6 is moved forward longitudinally so that the thumb piece engages the forward notch as shown in Fig. 1, the spindle 9 by reason of the ratchet will be rotated in one direction when pushing on the handle 1, and when the thumb piece is moved into the back notch, it will turn in the opposite direction by the same operation; that when the thumb-piece is placed in the central notch, the ratchets will both be locked and the spindle will be turned with the handle as an ordinary screw-driver; that when the bar 7 is moved backward so that the thumb piece 7 engages in the back notch, the spindle 9 will be free to reciprocate in the casing 3, but when it is moved forward as shown in Fig. 1, the spindle will be held in its relative position longitudinally by means of the locking piece 8 in the groove 9 of the spindle, thus preventing its longitudinal movement in which position the spindle may be caused to rotate in either direction desired. by the same operation of the shifting bar 6 and the ratchet as herein belore described; that the spring 10 is adapted to keep the spindle thrust outwardly at all times except when it is hold in the position by means of the locking piece 8 and the trigger 11 as shown best in Figs. 1 and 9; that the trigger 11 controls the action of the spring 10 when the locking piece 8 is not in engagement with the spindle at 9, and that all of the controlling parts are so placed in the handle that they all may be readily operated by the one hand of the operator holding the tool, thusfacilitating the use of the same.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is -1. In a spiral tool driver, the combination of a spirally operated spindle reciprocally mounted, ratchet means for regulating and controlling the rotary movement of said spindle, means in connection with said ratchet means extending to near the handle portion of said tool driver adapted to facilitate the controlling of said rotary motion of said spindle, means for locking said spindle in its longitudinal movement, means engaging with said lockingmeans extending to and provided with means near the handle of said tool for operating said lockingmeans, a. spring mounted in the handle of said tool driver adapted to thrust said spindle endwise, and means engaging therewith protruding through the handle adapted to prevent the operation of said spring means.

2. In a spiral tool driver the combination of a spirally operated spindle reciprocally .and revolubly mounted in a. casing. ratchet means for regulating and controlling the rotary movement of said spindle, means in connection with said ratchet means extending to near the handle portion of said tool driver adapted to facilitate the controlling of said rotary motion of said spindle, means for locking said spindle in its reciprocal movement, means engaging with said locking means extending to near the handle of said tool, means mounted in said handle connected to said engaging means, means in said handle piece adapted to thrust said spindle in one direction, and means engaging therewith pivotally mounted in the handle and protruding through the same adapted to prevent the thrust of said means.

3. In a spiral tool driver, the combination of a handle piece, an outer casing rigidly attached to said handle piece an inner casing extending through said handle piece and into said outer casing spaced apart from said outer casing, a spindle reciprocally and revwith means near the handle of said tool for operating said locking means, 'a spring mounted in-the handle of said tool driver adapted to thrust said spindle endwise, and means engaging therewith protruding through the handle adapted to prevent the operatieii of said spring means.

In testimony whereof, I have hereunto subscribed my name in the presence of two subscribing Witnesses.

CHARLES WILDER. lVitnesses ABRAM B. BOWMAN, EDITH MANWARING. 

